"On Monday, after a weekend of nonviolent civil disobedience training, supporters of the Tar Sands Blockade rallied in Winnsboro, Tex., where protesters were holding a 'sit-in' 70 feet off the ground in a swath of trees. The trees stand in the middle of a corridor already cleared for the pipeline. The tree-climbing pipeline foes unfurled a banner that reads: 'Rise Up and Defend Your Homes.'

Although the permit for the northern leg of the Keystone XL pipeline is still under consideration by the State Department, the southern leg of the pipeline has won the support of President Obama, obtained permits from the Army Corps of Engineers and turned back challenges in Texas courts.

Landowners and activists such as Hannah are trying to physically stand in the way of the equipment that is laying down the pipeline. One day, people chained themselves to a truck. Another day, they stood in front of bulldozers. Several people have been arrested, including, briefly, a New York Times reporter."